The die design critical points and advanced pressing process of board spring on shaft steamer dynamotor.介绍了汽轮发电机转轴上的板弹簧模具设计要点以及先进的压制工艺.The mechanical energy can be changed back into electrical energy by means of a dynamo...
Peel the pears and remove the cores.将梨削皮去核。Quasars are the highly energetic cores of distant galaxies.类星体是遥远星系的极为活跃的核心体.In the meantime the protoplanet cores were proceeding to consolidate.在此期间,原行星的核开始凝成....